Question

Which of these has the largest area comparatively?

• A. A square of side length 5 cm.
• B. A rectangle of length 3 cm and breadth 4 cm.
• C. A square of side length 4 cm.
• D. A rectangle of length 4 cm and breadth 2 cm.

Answer 1

The correct option is A

A square of side length 5 cm.

We know that area of a square of side length 'a' units is $a^2$.
And the area of a rectangle of length 'l' units and breadth 'b' units is $l\times b$.

Hence, area of a square of side 5 cm = $5^2$ = $25c{m}^2$
Area of a rectangle of length 3 cm and breadth 4 cm = $3\times 4$ = $12c{m}^2$
Area of a square of side 4 cm = $4^2$ = $16c{m}^2$
Area of a rectangle of length 4 cm and breadth 2 cm = $4\times 2$ = $8c{m}^2$
$\therefore$ Among the given options, a square with side length 5 cm has the largest area.